﻿using System;

public abstract class Shape
{
    protected int Width { get; set; }
    protected int Height { get; set; }
    public Shape(int width)
    {
        this.Width = width;

    }
    public Shape(int width, int height)
    {
        this.Width = width;
        this.Height = height;

    }

    public abstract double CalculateSurface();

}